EP0942426B1 - DVD-Aufzeichnungsanordnung und -verfahren - Google Patents

DVD-Aufzeichnungsanordnung und -verfahren Download PDF

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Publication number
EP0942426B1
EP0942426B1 EP99301031A EP99301031A EP0942426B1 EP 0942426 B1 EP0942426 B1 EP 0942426B1 EP 99301031 A EP99301031 A EP 99301031A EP 99301031 A EP99301031 A EP 99301031A EP 0942426 B1 EP0942426 B1 EP 0942426B1
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EP
European Patent Office
Prior art keywords
data
video
recording
video title
title set
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99301031A
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English (en)
French (fr)
Other versions
EP0942426A2 (de
EP0942426A3 (de
Inventor
Yoshiaki 203 Takahashi Building No:14 Matsumoto
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Nippon Columbia Co Ltd
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Nippon Columbia Co Ltd
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Publication date
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Publication of EP0942426A2 publication Critical patent/EP0942426A2/de
Publication of EP0942426A3 publication Critical patent/EP0942426A3/de
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Publication of EP0942426B1 publication Critical patent/EP0942426B1/de
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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/327—Table of contents
    • G11B27/329—Table of contents on a disc [VTOC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/213—Read-only discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/216—Rewritable discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/218—Write-once discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
    • G11B2220/2575—DVD-RAMs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/013—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track for discrete information, i.e. where each information unit is stored in a distinct discrete location, e.g. digital information formats within a data block or sector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/77—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/84—Television signal recording using optical recording
    • H04N5/85—Television signal recording using optical recording on discs or drums

Definitions

  • the present invention relates to a technique for recording content data, such as video data, on an optical information recording medium, such as a DVD-R (Digital Versatile Disk-Recordable) or a DVD-RAM.
  • an optical information recording medium such as a DVD-R (Digital Versatile Disk-Recordable) or a DVD-RAM.
  • the MPEG Motion Picture Image Coding Expert Group
  • the DVD video is well known as an optical disk that contains video data compressed by the MPEG2 data compression technique and navigation data showing the reproduction method of the video data.
  • the logical format and the reproduction method of the DVD video are described in detail in Japanese Patent Application Laid-Open No. Hei 8-273304. These items have been selected to formulate the DVD Video Standard.
  • volume and file structures More specifically, data on DVD video is formed in volume and file structures, and the formats of volume and file structures are prescribed in Micro UDF (Universal Disk Format) and ISO (International Standard Organization) 9660. Information about the format of the volume and file structure (volume data, file structure data) is described in the management area provided in Micro UDF and ISO 9660.
  • Micro UDF Universal Disk Format
  • ISO International Standard Organization
  • the DVD-R is interoperable with the DVD video and is a write once read many type optical disk into which the user can record information.
  • Detailed description about the DVD-R is given, for example, in "DVD-R: Recordable by the User” in Denshi Gijutsu (Electronics Technology), 1996 Aug., pp. 10-14.
  • EP 0 797 205 discloses an information recording apparatus when information is recorded on e.g. a DVD-R from a VTR.
  • the document teaches recording aggregate attribute data for all video title sets in the control data of the video manager.
  • the DVD-R have the same logical format as that of the DVD video, and therefore information can be reproduced from a DVD-R in the same manner as with a DVD video disk.
  • a user records video data in a DVD-R, as shown in Fig. 19, he transfers video data, which is to be recorded on a DVD-R 109, from his video camera 101 or the like into a VTR 102.
  • the video data sent to the VTR 102 is compressed by an MPEG encoder 103, and recorded as material data in memory 104.
  • a DVD authoring system 105 is used to edit the video data to generate a file of the same format as that of logical data in conformity with the DVD Video Standard, the file is temporarily recorded in a large-capacity intermediate medium 106, such as a tape device.
  • a DVD formatter 107 is used to convert those files into the physical format in conformity with the DVD Video Standard, and the files are recorded in a DVD-R 109 by a cutting machine 108 as a recording device.
  • the recording data requires at least twice as long as reproducing recorded data.
  • a data unit to be reproduced includes data pack strings each of which are obtained by compressing according to the MPEG format, content data including at least any of an audio signal, a main video signal and a sub picture signal, and dividing the content data into packets.
  • the data unit further includes a navigation pack, which is placed at the head of the data pack string and contains reproduction information about the data pack string and navigation information describing the relation of the data unit with other data units.
  • the content data is reproduced on the basis of navigation information.
  • a set of data units mentioned above is called a data cell.
  • Data cells are reproduced successively in time series.
  • Cell reproduction information concerning reproduction of data cells is written in a table outside data cells and is referred to at playback as navigation data.
  • a video stream includes at least one set of data cells and is called a video object (VOB).
  • a video object set One or more video objects that have a common attribute is called a video object set (VOBS). Therefore, in an ordinary movie with one story, one video object corresponds to one video object set, and one video stream concludes with one video object set.
  • Video title set information (VTSI), which describes information for use in reproducing a video object set and attribute information, and a backup of video title set information (VTSI_BUP) are respectively arranged before and after the video object set, and those items of information constitute a video title set (VTS).
  • a maximum of 99 video title sets can be placed on a DVD-R, and a video manager (VMG) that describes information for managing the video title sets is arranged just before a group of video title sets.
  • VMG video manager
  • VTSI video title set information
  • a video manager for managing the respective video title sets is undetermined until recording of all video title sets is finished.
  • Volume and file structure data for managing the contents on the disk as files and directories is undetermined until all data are recorded on the disk are determined.
  • the video manager, the volume and file structure data are recorded in the leading portion (more specifically, the inner circumference portion) of a recordable user area on the disk.
  • a DVD-R as shown in Fig. 19
  • files are generated in the logical data format in conformity with the DVD Video Standard, and are temporarily recorded in a large-capacity intermediate medium 106, such as a tape device.
  • the DVD formatter 107 After all files are complete, in other words, after it has become possible to determine a video manager and volume and file structure data, it is necessary for the DVD formatter 107 to perform sectoring and modulation according to the physical format in conformity with the DVD Video Standard, and the cutting machine 108 sequentially records data starting from the inner circumference portion of the DVD-R 109.
  • the present invention has been made with the above problem in mind and has as its object to enable the pictures taken with a video camera to be directly recorded on an optical recording medium (optical disk), such as a DVD-R in a format reproducible on a DVD video reproducing device without using an intermediate medium.
  • optical recording medium optical disk
  • Another object is to enable a scene to be recorded in such a way that discontinuity does not occur when it is reproduced.
  • a DVD recorder for recording content data including any of input main video signal, sub picture signal, and audio signal on an optical information recording medium in a recording format in conformity with the DVD Video Standard, the DVD recorder comprising:
  • a reserved area is previously secured on an optical information recording medium, content data compressed at a fixed compression rate is converted into at least one video title set in accordance with the DVD Video Standard, and the video title sets obtained by the conversion are sequentially recorded in the area following the reserved area.
  • lead-out data is recorded in a lead-out area
  • a video manager is recorded in the rear portion of the reserved area
  • volume and file structure data is recorded in the front portion of the reserved area.
  • lead-in data is recorded in the lead-in area.
  • the above-mentioned video title set recording instruction means may be configured to instruct the data formatting means to convert the content data compressed by the data compression means into at least one video title set having a predetermined capacity, and also instruct the data recording means to sequentially record at least one video title set, obtained by the conversion, in the area following the reserved area on the optical information recording medium.
  • the video title set recording instruction means preferably instructs the data recording means to record content data in one video title set as a single data cell.
  • the video title set recording instruction means may include video title set information area securing means for instructing the data recording means to secure a video title set information reserved area of a predetermined capacity in the front portion of each video title set area when a video title set is recorded; data cell recording means for instructing the data recording means to record at least one data cell of a predetermined capacity in the area following the video title set information reserved area; and video title set information recording means for instructing the data recording means to record video title set information in the video title set information reserved area after data cells have been recorded on the optical information recording medium by the data cell recording means.
  • the video title set recording instruction means preferably instructs the data recording means to record a video title set with a plurality of data cells, each having a predetermined capacity, included in it.
  • control means may further comprise:
  • control means may further include:
  • Fig. 1 is a schematic functional block diagram of a DVD recording device to which a first embodiment of the present invention is applied.
  • a DVD recording device comprises a signal input unit 1 for receiving content data including at least any of the main video signal, sub picure signal and audio signal; a data compressor 2 for compressing the content data input into the signal input unit 1 at a fixed compression rate; a data storage 3 for storing the content data compressed by the data compressor 2; a data formatter 4 for adding reproduction information for the content data and navigation data indicating the relation with other content data to the content data stored in the data storage 3 and converting the content data into data having a format in conformity with the DVD Video Standard; a data recording unit 5 for recording the content data converted into the format in conformity with the DVD Video Standard by the data formatter 4 on an optical information recording medium 6, such as a DVD-R; a controller 7 for centrally controlling the signal input unit 1, the data compressor 2, the data storage 3, the data formatter 4, and the data recording unit 5; and an operation panel 8 for accepting command information that is input into the control unit 7.
  • Fig. 2 is a schematic block diagram showing a hardware configuration of the DVD recording device shown in Fig. 1.
  • Fig. 2 when video data is recorded on a DVD-R as an optical information recording medium 6, the video data from a video camera 10 or a VTR 11 is first compressed by an MPEG encoder 12 and stored in a buffer memory 13. Then, the video data stored in the buffer memory 13 is converted into data having a format in conformity with the DVD Video Standard by a DVD formatter 14, and recorded on an optical information recording medium 6 by a cutting machine 15.
  • a system microcomputer/timer 17 controls the MPEG encoder 12, the buffer memory 13, the DVD formatter 14, and the cutting machine 15 to enable recording as mentioned above.
  • a key operation panel 18 accepts command information to be input to the system microcomputer/timer 17.
  • the video camera 10 and the VTR 11 correspond to the signal input unit 1 in Fig. 1.
  • the MPEG encoder 12, the buffer memory 13, the DVD formatter 14, the cutting machine 15, the system microcomputer/timer 17, and the key operation panel 18 correspond respectively to the data compressor 2, the data storage 3, the data formatter 4, the data recording unit 5, the controller 7, and the operation panel 8 in Fig. 1.
  • Fig. 3 is a diagram showing a logical structure of an optical information recording medium (optical disk) that can be played on an ordinary DVD video reproducing device (DVD video player).
  • optical information recording medium optical disk
  • DVD video reproducing device DVD video player
  • the optical information recording medium of this kind includes at least a lead-in area 21, a volume and file structure area 22, a video manager (VMG) 23, video title sets #1 to #n, and a lead-out area 24.
  • VMG video manager
  • the video manager (VMG) 23 includes at least a video manager information (VMGI) 25, and a backup of video manager information (VMGI_BUP) 26.
  • the video manager (VMG) 23 may further include a video object set for video manager menu (VMGM_VOBS) as an option.
  • Each of video title sets #1 to #n includes at least video title set information (VTSI) 27, a video object set for video title set title (VTSTT_VOBS) 28, and a backup of video title set information (VTSI_BUP) 29.
  • Each video title set #1 to #n may further include a video object set for a video title set menu (VTSM_VOBS) as an option.
  • Fig. 4 is a schematic block diagram showing a structural example of the controller 7 shown in Fig. 1.
  • a reserved area securing instruction unit 41 instructs the data recording unit 5 to secure a reserved area with a predetermined capacity in the area following the lead-in area 21 of an optical information recording medium 6.
  • a video title set recording instruction unit 42 instructs the data formatter 4 to convert, in compliance with the DVD Video Standard, content data compressed by the data compressor 2 and stored in the data storage 3 into at least one of video title sets #1 to #n, each placed in a predetermined capacity and including a video object set and video title set information describing information for reproducing the video object set and attributes information, and also instructs the data recording unit 5 to sequentially record the video title sets #1 to #n, produced by the conversion, in the area following the reserved area on the optical information recording medium 6.
  • the video title set recording instruction unit 42 instructs the data recording unit 5 to record the content data in one video title set as a data cell.
  • a lead-out recording instruction unit 43 instructs the data formatter 4 to generate lead-out data in conformity with the DVD Video Standard, and also instructs the data recording unit 5 to record the generated lead-out data in the lead-out area 24 which follows the recorded area of the video title set on the optical information recording medium 6 after the video title sets #1 to #n have been recorded on the optical information recording medium 6 as instructed by the video title set recording instruction unit 42.
  • a video manager recording instruction unit 44 instructs the data formatter 4 to generate a video manager 23 for managing the video title sets recorded on the optical information recording medium 6 in conformity with the DVD Video Standard and also instructs the data recording unit 5 to record the generated video manager 23 in the rear portion of the reserved area, which was secured by the reserved area securing instruction unit 41, after lead-out data has been recorded on the optical information recording medium 6 as instructed by the lead-out recording instruction unit 43.
  • a volume and file structure data recording instruction unit 45 instructs the data formatter 4 to generate, in conformity with the DVD Video Standard, volume and file structure data 22 for managing contents on the optical information recording medium 6 as files and directories, and also instructs the data recording unit 5 to record the volume and file structure data 22 in the front portion of the reserved area, which was secured by the reserved area securing instruction unit 41, after the video manager 23 has been recorded on the optical information recording medium 6 as instructed by the video manager recording instruction unit 44.
  • a zero data recording instruction unit 46 instructs the data formatter 4 and the data recording unit 5 to record zero (0) data between the front portion of the reserved area on the optical information recording medium 6, secured by the reserved area securing instruction unit 41, where volume and file structure data 22 was recorded, and the rear portion of the reserved area where the video manager 23 was recorded after the volume and file structure data 22 has been recorded on the optical information recording medium 6 as instructed by the volume and file structure data recording instruction unit 45.
  • a lead-in data recording instruction unit 47 instructs the data formatter 4 to generate lead-in data in accordance with the DVD Video Standard, and also instructs the data recording unit 5 to record the lead-in data in the lead-in area 21 on the optical information recording medium 6 after zero data has been recorded on the optical information recording medium 6 as instructed by the zero data recording instruction unit 46.
  • a program memory area securing unit 48 instructs the data recording unit 5 to secure a program memory area at a location further in than the lead-in area 21 or at a location further out than the lead-out area 24.
  • An information recording instruction unit 49 instructs the data recording unit 5 to record information obtained when video title sets #1 to #n are recorded in the program memory area.
  • a data generating instruction unit 50 instructs the data formatter 4 to generate the volume and file structure data 22 and the lead-in data by referring to information recorded in the program memory area after the final video title set #n has been recorded.
  • Figs. 5 and 6 are diagrams for explaining procedures for recording on an optical information recording medium 6 in the logical structure shown in Fig. 3, video data and audio data in conformity with the DVD Video Standard, that is, data that can be reproduced on a DVD video reproducing device (DVD video player) in the first embodiment of the present invention.
  • DVD Video Standard that is, data that can be reproduced on a DVD video reproducing device (DVD video player) in the first embodiment of the present invention.
  • the optical information recording medium 6 is a write-once (WO) disk.
  • WO write-once
  • a lead-in area 21, as shown in Fig. 3, and a reserved area sufficient for recording volume and file structure data (FS) 22 and a video manager (VMG) 23 are secured on the WO disk in advance.
  • the capacity of the area to be secured is obtained as follows.
  • VTS video title sets
  • VTSM_VOBS video object set for video title set menu
  • the largest capacity of an area required for recording the video manager 23 descriptive of the pointers to and the attributes of the video title sets #1 to #n can be estimated from the largest number 99 of video title sets that can be recorded on the disk in advance.
  • a recording (playback) time is determined in advance for all video title sets #1 to #n.
  • a recording (playback) time is set at 5 minutes, for example.
  • the recording compression rate (amount of information for a unit time) of video and audio data is fixed (fixed transfer rate) and a capacity required for recording for a unit time is fixed.
  • data pack reproduction information and navigation information (a navigation pack) descriptive of the relation with other data units, which is placed at the head of a data pack string of a data unit to be reproduced in a fixed time length, can be prepared (determined) in advance.
  • video title set information (VTSI) 27 descriptive of reproduction information for a video object set 28 as a set of data units and attributes information, and its backup (VTSI_BUP) 29 can be prepared (determined) in advance.
  • a video title set information 27 describes a program chain information (PGCI) that specifies, for example, a method for connection to a program for reproducing a story of a title. It is assumed here that each video title set includes one program chain (PGC), each program chain includes one program, and each program includes one data cell. The reproduction time (recording time) of each data cell is set to be 5 minutes in this example.
  • PGCI program chain information
  • each data unit is fixed at 0.5 seconds (15 frames at field frequency of 60Hz)
  • 1 data unit is denoted as 1 GOP (Group of Pictures) as provided in MPEG2 and if each of the numbers of I-pictures (intra-coded pictures), P-pictures (predictive-coded pictures) and B-pictures (bi-directionally predictive-coded pictures) are fixed regardless of variation of input video data, the data capacity (number of bytes) for each data unit can be made constant.
  • the DVD recording device schematically shown in Fig. 2, which embodied the functional configurations indicated in Figs. 1 and 4, carries out recording by following the procedures as shown in Figs. 5 and 6.
  • the MPEG encoder 12 compresses video data from a video camera 10 or a VTR 11 at a fixed compression rate (1/70, for example).
  • FIG. 5(a) stream data (data units) compressed and output from MPEG encoder 12 is shown. For example, if we pay attention to a video title set #n, we can see data units 1 to 600 output from MPEG encoder 12.
  • the stream data compressed and output as described above is stored in the buffer memory 13.
  • the buffer memory 13 after delaying the stream data output from MPEG encoder 12 for a fixed length of time (0.07 seconds, for example), compresses the data on the time,base and outputs it to the DVD formatter 14. For example, if attention is paid to the video title set #n, it is understood that the data units 1 to 600 are delayed by a fixed length of time, then compressed on the time base, and output to the DVD formatter 14.
  • the DVD formatter 14 As shown in Fig. 5(c), some items of navigation data are added to each data unit to convert it to data having a format that can be reproduced on a DVD video player. Therefore, the DVD formatter 14 outputs data units added with a navigation pack. For example, in the video title set #n, the data units 1 to 600 as a whole, each added with a navigation pack, constitute one data cell.
  • the DVD formatter 14 outputs the video title set #n, for example, the video title set #n is recorded on a DVD-R by the cutting machine 15. If recording continues longer than 5 minutes from the start of recording of the current video title set #n, recording is concluded with the current video title set #n, and recording is restarted with the next video title set #n + 1.
  • the finalizing step is performed on the disk.
  • lead-out data (LO) 24 is recorded in the lead-out area, and a video manager 23 generated in accordance with the total number n of video title sets on the disk is recorded in the rear portion of the reserved area secured in advance. Then, volume and file structure data 22 regarding all data recorded on the disk is recorded in the front portion of the reserved area. Subsequently, an intermediate area between the recorded area of the volume and file structure data 22 and the recorded area of the video manager 23 is filled (recorded) with zero data. Finally, lead-in data (LI) 21 corresponding to the capacity of data recorded on the disk is recorded in the lead-in area. Thus, a disk that can be played on a DVD video player is completed.
  • Figs. 7 to 9 show a flowchart for explaining a detailed procedure for recording on an optical information recording medium 6 in a logical structure shown in Fig. 3, video and audio data in conformity with the DVD Video Standard, that is, data that can be reproduced on a DVD video reproducing device (DVD video player).
  • This flow of operations is performed by a DVD recording device, shown in Fig. 2, which embodied the functional configurations in Figs. 1 and 4.
  • Step S1 when the picture recording button on the key operation panel 18 is pressed (Step S1), the system microcomputer/timer 17 causes the pickup of the cutting machine 15 to be moved to the recording start position (Step S2). In other words, the pickup is moved to the next position of the reserved area secured in advance.
  • the system microcomputer/timer 17 initializes the video title set number counter's value n to "1" (Step S3). Subsequently, video (image) data output from a video camera 10 or a VTR 11 is input to MPEG encoder 12. In response, the MPEG encoder 12 starts compressing video data at a fixed rate (Step S4). The buffer memory 13 temporarily stores video data compressed by the MPEG encoder 12 as content data (Step S5).
  • the DVD formatter 14 in response to a command from the system microcomputer/timer 17, adds navigation data to the content data stored in the buffer memory 13, and starts work of converting the data into data having a format in conformity with the DVD Video Standard.
  • video title set information of video title set #n is output (Step S6).
  • a navigation pack is output, which is to be added to the first data unit of video title set #n (Step S7).
  • This video title set information and a navigation pack are recorded in this order on the disk by the cutting machine 15.
  • the system microcomputer/timer 17 resets a timer 1 for counting passage of 5 minutes and a timer 2 for counting passage of 0.5 seconds, and causes those timers to start counting (Step S8).
  • the system microcomputer/timer 17 decides whether or not the timer 1 has counted passage of 5 minutes (Step S9). If the timer 1 has counted passage of 5 minutes, this is notified to the DVD formatter 14. In response, the DVD formatter 14 outputs a backup of video title set #n information (VTSI_BUP) (Step S10), increments the counter's value n by one (Step S11), and returns to Step S6.
  • the cutting machine 15 records the backup of video title set #n information next to the last data unit of the video title set #n.
  • Step S9 if the timer 1 has not counted the passage of 5 minutes, the system microcomputer/timer 17 decides whether or not the timer 2 has counted the passage of 0.5 seconds (Step S12). If the timer 2 has counted the passage of 0.5 seconds, this is notified to the DVD formatter 14. In response, the DVD formatter 14 outputs a navigation pack to be added to a data unit next to the recorded data unit out of the data units constituting the video title set #n (Step S16). The cutting machine 15 records this data next to the recorded data unit. After this, the system microcomputer/timer 17 resets the timer 2 (Step S17), and returns to Step S9.
  • Step S12 if the timer 2 has not counted the passage of 0.5 seconds, the system microcomputer/timer 17 decides whether or not the Stop button on the key operation panel 18 has been pressed, and decides whether or not the remaining capacity of the disk is smaller than a recording capacity corresponding to 5 minutes (Step S13). If the Stop button has not been pressed and the remaining capacity of the disk is greater than a recording capacity corresponding to 5 minutes, the DVD formatter 14 compresses the content data stored in the buffer memory 13 on the time base and outputs the content data to the cutting machine 15 from the buffer memory 13 (Step S14). In response, the cutting machine 15 records this content data as a data unit next to the navigation pack of the data unit already recorded (Step S15), and the process returns to Step S9.
  • the system microcomputer/timer 17 at Step S13 decides that the Stop button has been pressed or the remaining capacity of the disk is smaller than a recording capacity corresponding to 5 minutes
  • the system microcomputer/timer 17 moves on to the flow of Fig. 9 and decides whether or not the timer 1 has counted the passage of 5 minutes (Step S18). If the timer 1 has not counted the passage of 5 minutes, the DVD formatter 14 outputs black image data (Step S19).
  • the cutting machine 15 records the black image data as the rest of the data unit being recorded.
  • Step S18 the above operation is repeated until the timer 1 counts the passage of 5 minutes.
  • the system microcomputer/timer 17 notifies this to the DVD formatter 14.
  • the DVD formatter 14 outputs a backup of the video title set #n information (Step S20), and outputs lead-out data (Step S21).
  • the cutting machine 15 sequentially records those items of data next to the last data unit of the video title set #n.
  • the DVD formatter 14 After this, the DVD formatter 14 generates a video manager (Step S22).
  • the system microcomputer/timer 17 causes the pickup of the cutting machine 15 to move to an inner circumference portion of the disk (Step S23). More specifically, the pickup is moved to a position (in the rear portion of the reserved area) distant by the size of the video manager from the recording start position of video title set information (VTSI) #1.
  • the cutting machine 15 outputs the video manager from its pickup (Step S24), and records the video manager in the rear portion of the reserved area secured in advance.
  • the system microcomputer/timer 17 causes the pickup of the cutting machine 15 to move to the inner circumference portion of the disk and further move to the front portion of the reserved area secured in advance (Step S25).
  • the DVD formatter 14 generates volume and file structure data (Step S26).
  • the cutting machine 15 outputs the volume and file structure data from its pickup (Step S27).
  • the cutting machine 15 records the volume and file structure data in the front portion of the reserved area secured in advance. After this, the cutting machine 15 records zero (0) data up to just in front of the video manager recorded previously (Step S28).
  • the intermediate area between the front portion of the reserved area where the volume and file structure data was recorded and the rear portion where video manager was recorded is filled with zero data.
  • the system microcomputer/timer 17 causes the pickup of the cutting machine 15 to move to the inner circumference portion of the disk and further move to the start position of the lead-in area (Step S29).
  • the DVD formatter 14 generates lead-in data (Step S30), and the cutting machine 15 outputs the lead-in data from its pickup (Step S31).
  • lead-in data is recorded in the lead-in area.
  • the optical information recording medium 6 is a WO disk
  • video data and audio data that can be reproduced on a DVD video player can be recorded directly on the WO disk.
  • a reserved area is previously secured subsequent to the lead-in area of the WO disk. Then, content data compressed at a fixed compression rate is divided into predetermined data lengths (a length corresponding to a recording time of 5 minutes in this example), and they are sequentially recorded in the area following the reserved area on the WO disk as video title sets #1 to #n. After the video title sets #1 to #n have been recorded, lead-out data of the WO disk is recorded in the lead-out area, the video manager is recorded in the rear portion of the reserved area secured previously, and the volume and file structure data is recorded in the front portion of the reserved area. Finally, lead-in data is recorded in the lead-in area.
  • the reserved area is secured in advance following the lead-in area of the WO disk.
  • Content data compressed at a fixed compression rate is recorded next to the reserved area in the form of video title sets #1 to #n of 5 minutes long each.
  • the number of video title sets is increased to 99 at maximum according to a recording time of content data.
  • lead-out data is recorded in an outer circumference portion of the disk.
  • a video manager is generated in accordance with the number of video title sets, and is recorded in the rear portion of the reserved area.
  • Volume and file structure data is recorded in the management area (in the front portion of the reserved area) provided in Micro UDF and ISO9660, and the entire unused portion of the reserved area is filled with zero data.
  • lead-in data is generated in accordance with the length (capacity) of the program area, and is recorded in the lead-in area, and with this, a recorded disk that can be played on a DVD video player is completed.
  • the first embodiment by fixing a transfer rate of the compressed video data and by recording a plurality of fixed-length video title sets according to the recording time of a piece of work, it is possible to directly record on a WO disk or a rewritable disk without using an intermediate medium.
  • video data taken by a video camera for example, can be recorded directly on a recording medium, such as a DVD-R, in a format that can be played on a DVD video reproducing device without using an intermediate medium.
  • a DVD-R like with a VTR (Video Tape Recorder) or a video-movie, it is possible to record TV programs or commemorative images on such occasions and play them back whenever one wishes.
  • the video title sets have a fixed length (each video title set including one data cell)
  • one scene may extend over two or more video title sets due to its recording time.
  • a reproduced image may be unable to continue seamlessly over different video title sets.
  • a disk recording method which makes it possible to record video data, such as those taken by a video camera, directly on a WO disk or a rewritable disk in a format reproducible on a DVD video player without using an intermediate medium, and also makes it possible to record one scene without discontinuity when it is reproduced.
  • the DVD recording device in the first embodiment uses a controller 7' in place of the controller 7.
  • the structure is the same as that in the first embodiment shown in Figs. 1 and 2.
  • Fig. 10 is a schematic block diagram showing a structural example of the controller 7' in the DVD recording device, to which the second embodiment of the present invention is applied.
  • those components, which have the same functions as those in the controller 7 in the first embodiment shown in Fig. 4, are designated by the same reference numerals, and their detailed descriptions are omitted.
  • the video title set recording instruction unit 42' instructs the data formatter 4 to convert, in conformity with the DVD Video Standard, content data compressed by the data compressor 2 and stored in the data storage 3 into at least one video title set #1 to #n, each including a video object set and video title set information descriptive of information for reproducing the video object set and attributes information, and also instructs the data recording unit 5 to sequentially record the video title sets #1 to #n obtained by the conversion in the area following the reserved area of the optical information recording medium 6.
  • the video title set recording instruction unit 42' is so arranged as to instruct the data recording unit 5 to record content data in each video title set in the form of a plurality of data cells, which are fixed-capacity subdivisions of the content data.
  • Fig. 11 is a schematic block diagram showing the structure of the video title set recording instruction unit 42' shown in Fig. 10.
  • a video title set information area securing unit 51 when one video title set is recorded, instructs the data recording unit 5 to secure a video title set information reserved area with a predetermined capacity in front of the area where the video title set is recorded.
  • a data cell recording unit 52 instructs the data formatter 4 and the data recording unit 5 to record at least one data cell placed in a predetermined capacity in an area subsequent to the video title set information reserved area.
  • a video title set information recording unit 53 instructs the data formatter 4 and the data recording unit 5 to record video title set information in the rear portion of the video title set information reserved area after the final data cell of each video title set has been recorded.
  • Figs. 12 to 14 show diagrams for explaining a procedure for recording on an optical information recording medium 6 in a logical structure shown in Fig. 3, video and audio data in conformity with the DVD Video Standard, that is, data that can be reproduced on a DVD video reproducing device (DVD video player) in the second embodiment of the present invention.
  • DVD Video Standard that is, data that can be reproduced on a DVD video reproducing device (DVD video player) in the second embodiment of the present invention.
  • FS volume and file structure data
  • VMG video manager
  • the capacity of the area to be secured is obtained in such a way as described below.
  • VTS video title sets
  • VTSM_VOBS video object set for video title set menu
  • the largest capacity of an area for recording a video manager 23 descriptive of the pointers and the attributes of the video title sets #1 to #n can be estimated from the largest number 99 of video title sets that can be recorded on the disk.
  • data pack reproduction information and navigation information (in brief, a navigation pack) descriptive of the relation with other data units in the same data cell, placed at the head of a data pack string of a data unit to be reproduced in a fixed time length, can be prepared (determined) in advance.
  • video title set information 27 describes a program chain information (PGCI) that specifies, for example, a method for connecting to a program for reproducing the story of a title. It is assumed here that each video title set includes one program chain (PGC), each program chain includes not less than one program, and each program includes one data cell. The reproduction time (recording time) of each data cell is set to be 5 minutes in this example.
  • PGCI program chain information
  • each data unit is fixed at 0.5 seconds (15 frames at field frequency of 60Hz)
  • the number of data units included in each data cell is 600 as shown in Eq. 2 above.
  • one data unit is denoted as one GOP (Group of Pictures) as provided in MPEG2 and if the numbers of I-pictures (intra-coded pictures), P-pictures (predictive-coded pictures) and B-pictures (bi-directionally predictive-coded pictures) included in each GOP are fixed regardless of variation of input images, the data capacity (number of bytes) for each data unit can be made constant.
  • the DVD recording device schematically shown in Fig. 2 and embodying the functional configurations indicated in Figs. 1, 10 and 11, carries out recording by following the procedures as shown in Figs. 12 to 14.
  • the system microcomputer/timer 17 secures a reserved area sufficient for recording video title set information (VTSI) in front of the area for recording video title sets, to which this information is attached.
  • VTSI reserved area can be obtained as follows.
  • the length of recording images on one disk is 120 minutes.
  • a video title set can take the maximum length.
  • VTSI reserved area needs to be secured in a length sufficient for recording information about 24 data cells and 14400 data units.
  • the MPEG encoder 12 compresses video data output from a video camera 10 or a VTR 11 at a fixed compression rate (1/70, for example).
  • Fig. 13(a) shows stream data (data units) compressed and output by the MPEG encoder 12.
  • the MPEG encoder 12 outputs data units 1 to 600.
  • the stream data compressed and output as described is stored in the buffer memory 13.
  • the buffer memory 13 delays stream data output from the MPEG encoder 12 by a fixed length of time (0.004 seconds, for example), compresses the data on the time base, and outputs it to the DVD formatter 14.
  • data cell #m data units 1 to 600 are delayed by a fixed length of time, compressed on the time base, and output to the DVD formatter 14.
  • the DVD formatter 14 As shown in Fig. 13(c), some items of navigation data are added to each data unit to convert it to data having a format that can be reproduced on a DVD video player. Therefore, the DVD formatter 14 outputs data units each added with a navigation pack. For example, in the case of data cell #m, the data units 1 to 600 as a whole, each added with a navigation pack, constitute one data cell.
  • the DVD formatter 14 outputs the data cell #m, for example, the data cell #m is recorded on a DVD-R by the cutting machine 15. If recording continues longer than 5 minutes from the start of recording of the current data cell #m, recording is concluded with the current data cell #m, and recording is restarted with the next data cell #m + 1.
  • VTSI video title set information
  • VTSI_BUP backup of video title set information
  • the finalizing step is performed on the disk.
  • lead-out data (LO) 24 is recorded in the lead-out area, and a video manager 23 generated in accordance with the total number n of video title sets on the disk is recorded in the rear portion of the reserved area secured in advance. Then, volume and file structure data regarding all data recorded on the disk is recorded in the front portion of the reserved area. Subsequently, an intermediate area between the recorded area of the volume and file structure data 22 and the recorded area of the video manager 23 is filled (recorded) with zero data. Finally, lead-in data (LI) 21 corresponding to the capacity of data recorded on the disk is recorded in the lead-in area. Thus, a disk that can be played on a DVD video player is completed.
  • Figs. 15 to 18 show a flowchart for explaining a detailed procedure for recording on an optical information recording medium 6, in a logical structure shown in Fig. 3, video and audio data in conformity with the DVD Video Standard, that is, data that can be reproduced on a DVD video reproducing device (DVD video player) in the second embodiment of the present invention.
  • This flow of operations is performed by a DVD recording device, shown in Fig. 2, which embodies the functional configurations in Figs. 1, 10, and 11.
  • Step S51 when the Recording button on the key operation panel 18 is pressed (Step S51), the system microcomputer/timer 17 decides whether or not there is any video title set recorded on the disk (Step S52), and when no video title set has been recorded, secures a reserved area for recording volume and file structure data (FS) 22 and a video manager (VMG) 23 (Step S53), and then initializes the video title set number counter's value n to "1" (Step S54). On the other hand, if there are some recorded video title sets, the video title set number counter's value n is switched to the number of recorded video title sets + 1 (Step S55).
  • FS volume and file structure data
  • VMG video manager
  • the system microcomputer/timer 17 After setting the video title set number counter's value n at Step S54 or S55, the system microcomputer/timer 17 causes the pickup of the cutting machine 15 to move to a location immediately following the VTSI reserved area secured in front of the area for recording the video title set #n indicated by the counter's value n(Step S56).
  • Step S57 video data output from a video camera 10 or a VTR 11 is input to the MPEG encoder 12.
  • the MPEG encoder 12 starts compressing video data at a fixed rate (Step S57).
  • the buffer memory 13 temporarily stores video data compressed by the MPEG encoder 12 (Step S58).
  • the DVD formatter 14 responding to a command from the system microcomputer/timer 17, adds navigation data to content data stored in the buffer memory 13, and starts converting the data into data having a format in conformity with the DVD Video Standard.
  • the DVD formatter 14 outputs a navigation pack to add to the initial data unit of data cell #m (Step S60).
  • the cutting machine 15 records this data on the disk.
  • the system microcomputer/timer 17 resets a timer 1 for counting passage of 5 minutes and a timer 2 for counting passage of 0.5 seconds, and causes those timers to start counting (Step S61).
  • Step S62 the system microcomputer/timer 17 decides whether or not the timer 1 has counted passage of 5 minutes. If the timer 1 has counted passage of 5 minutes, this is notified to the DVD formatter 14. In response, the DVD formatter 14 increments the counter's value m by one (Step S63), and returns to Step S60.
  • Step S62 if the timer 1 has not counted the passage of 5 minutes, the system microcomputer/timer 17 decides whether or not the timer 2 has counted the passage of 0.5 seconds (Step S64). If the timer 2 has counted the passage of 0.5 seconds, this is notified to the DVD formatter 14. In response, the DVD formatter 14 outputs a navigation pack to be added to a data unit next to the recorded data unit out of the data units constituting the data cell #m (Step S68). After this, the system microcomputer/timer 17 resets the timer 2 (Step S69), and returns to Step S62. The cutting machine 15 records this navigation pack subsequent to the recorded data unit.
  • Step S64 if the timer 2 has not counted the passage of 0.5 seconds, the system microcomputer/timer 17 decides whether or not the Stop button on the key operation panel 18 has been pressed, and decides whether or not the remaining capacity of the disk is smaller than a recording capacity corresponding to 5 minutes (Step S65). If the Stop button has not been pressed and the remaining capacity of the disk is greater than a recording capacity corresponding to 5 minutes, the DVD formatter 14 compresses the content stored in the buffer memory 13 on the time base and outputs the signal to the cutting machine 15 from the buffer memory 13 (Step S66). In response, the cutting machine 15 records this content data as a data unit next to the navigation pack already recorded (Step S67), and the process returns to Step S62.
  • the system microcomputer/timer 17 at Step S65 decides that the Stop button has been pressed or the remaining capacity of the disk is smaller than a recording capacity corresponding to 5 minutes
  • the system microcomputer/timer 17 moves on to the flow of Fig. 17 and decides whether or not the timer 1 has counted the passage of 5 minutes (Step S70). If the timer 1 has not counted the passage of 5 minutes, the DVD formatter 14 outputs black image data (Step S71).
  • the cutting machine 15 records the black image data as the rest of the data unit being recorded.
  • Step S70 the above operation is repeated until the timer 1 counts the passage of 5 minutes.
  • the system microcomputer/timer 17 notifies this to the DVD formatter 14.
  • the DVD formatter 14 generates video title set information (VTSI) of video title set #n (Step S72).
  • the system microcomputer/timer 17 causes the pickup of the cutting machine 15 to move to the start position of the VTSI reserved area already secured in front of the recorded area of video title set #n (Step S73).
  • the DVD formatter 14 outputs zero data during the time the pickup of the cutting machine 15 moves from the head position of the VTSI reserved area to a position further inward, by the size of an area required for recording the video title set information of video title set #n, than the start position of recording the initial data cell #1 of video title set #n (Step S74).
  • the DVD formatter 14 outputs the video title set information of video title set #n (Step S75). Therefore, it follows that the video title set information is recorded in the rear portion of the VTSI reserved area and zero data is recorded in its front portion (remaining portion).
  • the system microcomputer/timer 17 causes the pickup of the cutting machine 15 to move to the rear end of that area of video title: set #n where the final data cell #m was recorded (Step S76). Then, in response to a command of the system microcomputer/timer 17, the DVD formatter 14 outputs a backup of the video title set information of video title set #n (Step S77). The cutting machine 15 records this data subsequent to the final data unit of video title set #n.
  • Step S78 the system microcomputer/timer 17 decides whether or not to perform the finalizing step. More specifically, this is decided by finding whether or not the remaining capacity of the disk is larger than a recording capacity corresponding to 5 minutes or by knowing whether or not a command to perform the finalizing step has been input from the key operation panel 18 by an operator.
  • PMA program memory area
  • Step S79 the cutting machine 15 records this data subsequent to the final data unit of video title set #n.
  • the DVD formatter 14 generates a video manager (Step S80).
  • the system microcomputer/timer 17 causes the pickup of the cutting machine 15 to move to the inner circumference portion of the disk (Step S81). In other words, the pickup is moved to a position (in the rear portion of the reserved area) distant by the length of the video manager from the recording start position of video title set information (VTSI) of video title set #1.
  • the cutting machine 15 outputs the video manager from its pickup (Step S82), and records the video manager in the rear portion of the reserved area secured in advance.
  • the system microcomputer/timer 17 causes the pickup of the cutting machine 15 to move to the inner circumference portion of the disk and further to move to the start position of the reserved area secured in advance (Step S83).
  • the DVD formatter 14 generates volume and file structure data (Step S84).
  • the cutting machine 15 records the volume and file structure data in the front portion of the reserved area secured in advance (Step S85). After this, the cutting machine 15 records zero (0) data up to immediately in front of the video manager recorded previously (Step S86). Thus, the intermediate area between the front portion of the reserved area where the volume and file structure data was recorded and the rear portion where the video manager was recorded is filled with zero data.
  • the system microcomputer/timer 17 causes the pickup of the cutting machine 15 to move to the inner circumference portion of the disk and further to move to the start position of the lead-in area (Step S87).
  • the DVD formatter 14 generates lead-in data (Step S88), and the cutting machine 15 records the lead-in data in the lead-in area (Step S89).
  • the optical information recording medium 6 is a WO disk
  • video data and audio data that can be reproduced on a DVD video player can be recorded directly on the WO disk.
  • a reserved area is previously secured following the lead-in area of the WO disk. Then, content data compressed at a fixed compression rate is divided into data cells #1 to #m each with a predetermined data length (a length corresponding to a recording time of 5 minutes in this example), and they are put together as a video title set and this video title set is recorded in the area subsequent to the reserved area on the WO disk. After the video title set has been recorded, lead-out data of the WO disk is recorded in the lead-out area, then the video manager is recorded in the rear portion of the reserved area secured previously, and volume and file structure data is recorded in the front portion of the reserved area. Finally, lead-in data is recorded in the lead-in area.
  • a plurality of data units each data unit reproduced in a fixed time (0.5 seconds in this example), being generated by a single recording
  • a plurality of data cells each data cell including a plurality of data units and being reproduced in a fixed time (5 minutes in this example)
  • a plurality of data cells generated by a single recording are recorded as one video title set on the disk.
  • Information such as the addresses where recording was carried out, recording length, and remaining capacity, is recorded in the program memory area provided inside the lead-in area or outside the lead-out area.
  • data such as a video manager, volume and file structure data, and lead-in data are generated and recorded in the specified areas on the disk.
  • the reserved area is previously secured behind the lead-in area on a WO disk.
  • Content data compressed at a fixed compression rate is recorded as one video title set, including 5-minute-long data cells, by a single recording, which starts from immediately behind the reserved area.
  • information such as the addresses where recording carried out this time, recording length, and remaining capacity, is recorded in the program memory area.
  • the number of video title sets is increased to 99 at maximum according to the number of times of recording (writing) of content data.
  • the lead-out data is recorded at the outer circumference portion of the disk.
  • a video manager is generated in accordance with the number of video title sets, and is recorded in the rear portion of the reserved area.
  • the volume and file structure data is generated, recorded in a management area (the front portion of the reserved area) provided in Micro UDF and ISO9660, and the rest of the reserved area is filled with the zero data.
  • lead-in data according to the length (capacity) of the program area, is generated and is recorded in the lead-in area, and thus, a recorded disk that can be played on a DVD video player is completed.
  • the transfer rate of compressed video data is fixed, a plurality of data cells of fixed length are generated according to recording time, and by recording the data cells as one video title set, the video signal can be recorded directly on a WO disk or a rewritable disk without using an intermediate medium.
  • pictures taken by a video camera can be recorded directly on a recording medium, such as a DVD-R, in a format reproducible on a DVD reproducing device without using an intermediate medium. Because arrangement has been made for one video title set to be recorded by a single recording operation, a scene can be recorded without discontinuity when it is reproduced.
  • video data taken by a video camera can be recorded directly on an optical information recording medium, such as a DVD-R, in a format reproducible on a DVD reproducing device.
  • an optical information recording medium such as a DVD-R

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  • Engineering & Computer Science (AREA)
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Claims (14)

  1. DVD-Recorder zum Aufzeichnen von Content-Daten, umfassend irgendeines aus einem Haupt-Videosignal, einem Bild-Teilsignal und einem Audiosignal auf einem optischen Informationsaufzeichnungsmedium (6) in einem Aufzeichnungsformat, das dem DVD-Videostandard entspricht, wobei der DVD-Recorder umfasst:
    Datenkomprimierungsmittel (2) zum Komprimieren der Content-Daten mit einer fixen Datenkomprimierungsrate;
    Datenformatierungsmittel (4) zum Hinzufügen von Wiedergabeinformationen für die Content-Daten und Navigationsdaten, die die Beziehung zwischen den Content-Daten und anderen Content-Daten zeigen und die vom Datenkomprimierungsmittel (2) komprimierten Daten in Daten mit einem Format konvertieren, das dem DVD-Videostandard entspricht;
    Datenaufzeichnungsmittel (5), um Content-Daten, die durch das Datenformatierungsmittel (4) zu Daten mit einem Format in Übereinstimmung mit dem DVD-Videostandard konvertiert wurden, auf dem optischen Informationsaufzeichnungsmedium (6) aufzuzeichnen; sowie
    Steuerungsmittel (7) zur zentralen Steuerung der jeweiligen Mittel, dadurch gekennzeichnet, dass das Steuerungsmittel (7) umfasst:
    Befehlsmittel zur Sicherung eines reservierten Bereichs (41), um dem Datenaufzeichnungsmittel (5) den Befehl zu erteilen, auf dem optischen Informationsaufzeichnungsmedium (6) einen reservierten Bereich mit einer vorbestimmten Kapazität zu sichern;
    Videotitel-Set-Aufzeichnungsbefehlsmittel (42), um dem Datenformatierungsmittel (4) den Befehl zu erteilen, die vom Datenkomprimierungsmittel (2) komprimierten Content-Daten in zumindest ein Videotitel-Set zu konvertieren, wobei jedes Videotitel-Set eine Vielzahl von Dateneinheiten aufweist, die innerhalb eines fixen Zeitraums wiederzugeben sind, und jedes Videotitel-Set innerhalb eines zweiten fixen Zeitraums wiedergegeben wird, wobei das Videotitel-Set ein Videoobjekt-Set und Videotitel-Set-Informationen enthält, die Informationen zur Wiedergabe des Videoobjekt-Sets beschreiben und Attributinformation beschreiben, und auch um dem Datenaufzeichnungsmittel (5) den Befehl zu erteilen, in der Folge zumindest ein durch Konvertierung erhaltenes Videotitel-Set in einem Bereich aufzuzeichnen, der dem reservierten Bereich auf dem optischen Informationsaufzeichnungsmedium (6) folgt;
    Videomanager-Aufzeichnungsbefehlsmittel (44), um dem Datenformatierungsmittel (4) den Befehl zu erteilen, einen Videomanager zum Verwalten der Videotitel-Sets, die auf dem optischen Informationsaufzeichnungsmedium (6) aufgezeichnet sind, entsprechend dem DVD-Videostandard zu schaffen, und auch um dem Datanaufzeichnungsmittel (5) den Befehl zu erteilen, den Videomanager in einem hinteren Teil des reservierten Bereichs aufzuzeichnen, nachdem die Videotitel-Sets gemäß Anweisung durch das Videotitel-Set-Aufzeichnungsbefehlsmittel (42) auf dem optischen Informationsaufzeichnungsmedium (6) aufgezeichnet worden sind; sowie
    Volums- und Dateistrukturdaten-Aufzeichnungsbefehlsmittel (45), um dem Datenformatierungsmittel (4) den Befehl zu erteilen, Volums- und Dateistrukturdaten als Informationen aufzuzeichnen, um Content auf dem optischen Informationsaufzeichnungsmedium (6) gemäß dem DVD-Videostandard als Dateien und Verzeichnisse zu verwalten, und auch um dem Datenaufzeichnungsmittel (5) den Befehl zu erteilen, die Volums- und Dateistrukturdaten in einem vorderen Teil des reservierten Bereichs aufzuzeichnen, nachdem der Videomanager auf dem optischen Informationsaufzeichnungsmedium (6) gemäß Anweisung durch das Videomanager-Aufzeichnungsbefehlsmittel (44) aufgezeichnet worden ist.
  2. DVD-Recorder nach Anspruch 1, worin das Videotitel-Set-Aufzeichnungsbefehlsmittel (42) dem Datenformatierungsmittel (4) den Befehl erteilt, die vom Datenkomprimierungsmittel (2) komprimierten Content-Daten in zumindest ein Videotitel-Set mit einer vorbestimmten Kapazität zu konvertieren, und auch dem Datenaufzeichnungsmittel (5) den Befehl erteilt, in der Folge zumindest ein durch die Konvertierung erhaltenes Videotitel-Set in einem Bereich aufzuzeichnen, der dem reservierten Bereich auf dem optischen Informationsaufzeichnungsmedium (6) folgt.
  3. DVD-Recorder nach Anspruch 2, worin das Videotitel-Set-Aufzeichnungsbefehlsmittel (42) dem Datenaufzeichnungsmittel (5) den Befehl erteilt, die Content-Daten in einem Videotitel-Set als eine Datenzelle aufzuzeichnen.
  4. DVD-Recorder nach Anspruch 1, worin das Videotitel-Set-Aufzeichnungsbefehlsmittel (42) Folgendes umfasst:
    ein Videotitel-Set-Informationsbereichssicherungsmittel (51), das, wenn ein Videotitel-Set aufgezeichnet ist, dem Datenaufzeichnungsmittel den Befehl erteilt, einen Videotitel-Set-Informationsreservebereich mit einer vorbestimmten Kapazität im vorderen Teil eines Bereichs zu sichern, wo das Videotitel-Set aufgezeichnet ist;
    ein Datenzellenaufzeichnungsmittel (52), das dem Datenaufzeichnungsmittel (5) den Befehl erteilt, zumindest eine Datenzelle mit einer vorbestimmten Kapazität in einem Bereich aufzuzeichnen, der dem Videotitel-Set-Informationsreservebereich folgt; und
    ein Videotitel-Set-Informationsaufzeichnungsmittel (53), das dem Datenaufzeichnungsmittel (5) den Befehl erteilt, Videotitel-Set-Informationen im Videotitel-Set-Informationsreservebereich aufzuzeichnen, nachdem Datenzellen vom Datenaufzeichnungsmittel (5) aufgezeichnet worden sind.
  5. DVD-Recorder nach Anspruch 4, worin das Videotitel-Set-Aufzeichnungsbefehlsmittel (42) dem Datenaufzeichnungsmittel (5) den Befehl erteilt, ein Videotitel-Set mit einer Vielzahl von darin enthaltenen Datenzellen aufzuzeichnen, die jeweils eine vorbestimmte Kapazität aufweisen.
  6. DVD-Recorder nach Anspruch 1, worin das Steuerungsmittel (7) weiters umfasst:
    Lead-out-Datenaufzeichnungsbefehlsmittel (43), um dem Datenformatierungsmittel (4) den Befehl zu erteilen, Leadout-Daten gemäß dem DVD-Videostandard zu erzeugen, und auch um dem Datenaufzeichnungsmittel (5) den Befehl zu erteilen, die Leadout-Daten in einem Lead-out-Bereich aufzuzeichnen, der dem aufgezeichneten Bereich des Videotitel-Sets auf dem optischen Informationsaufzeichnungsmedium (6) entspricht, nachdem Videotitel-Set gemäß dem Befehl des Videotitel-Set-Aufzeichnungsbefehlsmittels (42) auf dem optischen Informationsaufzeichnungsmedium (6) aufgezeichnet worden sind, und bevor das Videomanager-Aufzeichnungsbefehlsmittel (44) beginnt, einen Videomanager auf dem optischen Informationsaufzeichnungsmedium (6) aufzuzeichnen;
    Nulldaten-Aufzeichnungsbefehlsmittel (46), um dem Datenformatierungsmittel (4) und dem Datenaufzeichnungsmittel (5) den Befehl zu erteilen, Nulldaten zwischen einem vorderen Teil des reservierten Bereichs auf dem optischen Informationsaufzeichnungsmedium (6), wo Volums- und Dateistrukturdaten aufgezeichnet worden sind, und einem hinteren Teil des reservierten Bereichs, wo der Videomanager aufgezeichnet wurde, aufzuzeichnen, nachdem die Volums- und Dateistrukturdaten gemäß dem Befehl des Volums- und Dateistrukturdatenaufzeichnungsbefehlsmittel (45) auf dem optischen Informationsaufzeichnungsmedium (6) aufgezeichnet worden sind; sowie
    Lead-in-Datenaufzeichnungsbefehlsmittel (47), um dem Datenformatierungsmittel den Befehl zu erteilen, Lead-in-Daten gemäß dem DVD-Videostandard zu erzeugen, und auch, um dem Datenaufzeichnungsmittel (5) den Befehl zu erteilen, die Lead-in-Daten im Lead-in-Bereich auf dem optischen Informationsaufzeichnungsmedium (6) aufzuzeichnen, nachdem Null-Daten, wie durch das Null-Daten-Aufzeichnungsbefehlsmittel (46) angewiesen, auf dem optischen Informationsaufzeichnungsmedium (6) aufgezeichnet worden sind.
  7. DVD-Recorder nach Anspruch 6, worin das Steuerungsmittel (7) weiters Folgendes umfasst:
    Programmspeicherbereichssicherungsmittel (48), um dem Datenaufzeichnungsmittel (5) den Befehl zu erteilen, einen Programmspeicherbereich an einer Stelle, die sich weiter innen als der Lead-in-Bereich befindet, oder an einer Stelle zu sichern, die sich weiter außen als der Lead-out-Bereich befindet;
    Informationsaufzeichnungsbefehlsmittel (49), um dem Datenaufzeichnungsmittel (5) den Befehl zu erteilen, jedesmal, wenn ein Videotitel-Set aufgezeichnet worden ist, Informationen über das Videotitel-Set im Programmspeicherbereich aufzuzeichnen; sowie
    Datenerzeugungsbefehlsmittel (50), um dem Datenformatierungsmittel (4) den Befehl zu erteilen, die Volums- und Dateistrukturdaten und die Lead-in-Daten unter Bezugnahme auf Informationen zu erzeugen, die im Programmspeicherbereich aufgezeichnet wurden, nachdem ein endgültiges Videotitel-Set aufgezeichnet worden ist.
  8. DVD-Recorder nach Anspruch 1, worin das Reservebereichsicherungsbefehlsmittel (41) dem Datenaufzeichnungsmittel (5) den Befehl erteilt, den reservierten Bereich, der dem Lead-in-Bereich des optischen Informationsaufzeichnungsmediums (6) folgt, zu sichern.
  9. Verfahren zum Aufzeichnen von Content-Daten in einem Aufzeichnungsformat in Übereinstimmung mit dem DVD-Videostandard auf einem optischen Informationsaufzeichnungsmedium (6), folgende Schritte umfassend:
    das Sichern eines reservierten Bereichs mit einer vorbestimmten Kapazität, um darauf einen Videomanager sowie Volums- und Dateistrukturdaten aufzuzeichnen,
    das Erzeugen einer Vielzahl von Videotitel-Sets gemäß einer Aufzeichnungszeit, wobei jeder der Videotitel-Sets eine Vielzahl von Dateneinheiten aufweist, wobei jede der Dateneinheiten innerhalb eines ersten fixen Zeitraums wiederzugeben ist und jeder der Videotitel-Sets innerhalb eines zweiten fixen Zeitraums wiederzugeben ist,
    sowie das Aufzeichnen der Videotitel-Sets auf dem optischen Informationsaufzeichnungsmedium (6).
  10. Verfahren nach Anspruch 9, wobei das Verfahren zum Aufzeichnen von Content-Daten dient, die irgendeines aus einem Haupt-Videosignal, einem Video-Teilsignal und einem Audiosignal auf einem optischen Informationsaufzeichnungsmedium (6) in einem Aufzeichnungsformat umfasst, das dem DVD-Videostandard entspricht, wobei das Verfahren die folgenden Schritte umfasst:
    das Sichern eines reservierten Bereichs mit einer vorbestimmten Kapazität in einem Bereich, der dem Lead-in-Bereich des optischen Informationsaufzeichnungsmediums (6) entspricht;
    das Konvertieren der Content-Daten in zumindest einen Videotitel-Set mit einer vorbestimmten Kapazität, und in der Folge das Aufzeichnen zumindest eines Videotitel-Sets in einem Bereich, der dem reservierten Bereich des optischen Informationsaufzeichnungsmediums (6) entspricht;
    das Erzeugen eines Videomanagers zum Verwalten der auf dem optischen Informationsaufzeichnungsmedium (6) aufgezeichneten Videotitel-Sets, nachdem die Videotitel-Sets auf dem optischen Informationsaufzeichnungsmedium (6) aufgezeichnet worden sind, und das Aufzeichnen des Videomanagers in einem hinteren Teil des reservierten Bereichs des optischen Informationsaufzeichnungsmediums (6), sowie
    das Erzeugen von Volums- und Dateistrukturdaten zum Verwalten von Content, der auf dem optischen Informationsaufzeichnungsmedium (6) aufgezeichnet ist, nachdem der Videomanager auf dem optischen Informationsaufzeichnungsmedium (6) aufgezeichnet worden ist, und das Aufzeichnen der Volums- und Dateistrukturdaten in einem vorderen Teil des reservierten Bereichs.
  11. Aufzeichnungsverfahren nach Anspruch 10, worin die Content-Daten in einem Videotitel-Set als eine Datenzelle aufgezeichnet werden.
  12. Verfahren nach Anspruch 9, worin das Verfahren zum Aufzeichnen von Content-Daten dient, die irgendeines aus einem Haupt-Videosignal, einem Video-Teitsignal und einem Audiosignal auf einem optischen Informationsaufzeichnungsmedium (6) in einem Aufzeichnungsformat, das dem DVD-Videostandard entspricht, wobei das Aufzeichnungsverfahren die folgenden Schritte umfasst:
    das Sichern eines reservierten Bereichs mit einer vorbestimmten Kapazität in einem Bereich, der einem Lead-in-Bereich des optischen Informationsaufzeichnungsmediums (6) entspricht;
    das Unterteilen der mit einer fixen Komprimierungsrate komprimierten Content-Daten in zumindest einer Datenzelle mit einer vorbestimmten Kapazität, und das Aufzeichnen eines Videotitel-Sets, das die zumindest eine Datenzelle umfasst, in einem Bereich nach dem reservierten Bereich des optischen Informationsaufzeichnungsmediums (6);
    das Erzeugen eines Videomanagers zum Verwalten der auf dem optischen Informationsaufzeichnungsmedium (6) aufgezeichneten Videotitel-Sets, nachdem die Videotitel-Sets auf dem optischen Informationsaufzeichnungsmedium (6) aufgezeichnet worden sind, und das Aufzeichen des Videomanagers in einem hinteren Teil des reservierten Bereichs des optischen Informationsaufzeichnungsmediums (6); sowie
    das Erzeugen von Volums- und Dateistrukturdaten zum Verwalten von Content, der auf dem optischen Informationsaufzeichnungsmedium (6) aufgezeichnet ist, nachdem der Videomanager auf dem optischen Informationsaufzeichnungsmedium (6) aufgezeichnet worden ist, und das Aufzeichen der Volums- und Dateistrukturdaten in einem vorderen Teil des reservierten Bereichs,
    worin der Schritt des Aufzeichnens des Videotitel-Sets in einem Bereich, der dem reservierten Bereich folgt, die folgenden Schritte umfasst:
    zunächst das Sichern eines Videotitel-Set-Informationsreservebereichs zum Aufzeichnen von Videotitel-Set-Informationen, die im Videotitel-Set enthalten sind, vor dem Bereich, wo der Videotitel-Set aufgezeichnet ist;
    das Aufzeichnen eines Videoobjekt-Sets, das im Videotitel-Set enthalten ist, in dem Bereich, wo die Videotitel-Sets aufgezeichnet sind, nach dem Vidoetitel-Set-Informationsreservebereich; sowie
    das Aufzeichnen von Videotitel-Set-Informationen der Videotitel-Sets im Videotitel-Set-Informationsreservebereich, nachdem die Videotitel-Sets auf dem optischen Informationsaufzeichnungsmedium (6) aufgezeichnet worden sind.
  13. Aufzeichnungsverfahren nach Anspruch 12, worin die Content-Daten in einer Datenzelle als zumindest eine Dateneinheit mit einer fixen Länge aufgezeichnet werden.
  14. Aufzeichnungsverfahren nach Anspruch 9, worin das Verfahren zum Aufzeichnen von Content-Daten in einem Aufzeichnungsformat, das dem DVD-Videostandard entspricht, auf einem optischen Informationsaufzeichnungsmedium (6) dient, folgende Schritte umfassend:
    das Erzeugen einer Vielzahl von Datenzellen gemäß einer Aufzeichnungszeit, wobei jede der Datenzellen eine Vielzahl von Dateneinheiten aufweist, die in einem ersten Bereich eines fixen Zeitraums wiederzugeben sind, und jede der Datenzellen in einem zweiten Bereich eines anderen fixen Zeitraums wiedergegeben wird, sowie
    das Aufzeichnen der Vielzahl von Datenzellen als ein Videotitel-Set.
EP99301031A 1998-02-12 1999-02-12 DVD-Aufzeichnungsanordnung und -verfahren Expired - Lifetime EP0942426B1 (de)

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DE69914006T2 (de) 2004-11-25
EP0942426A2 (de) 1999-09-15
JPH11232792A (ja) 1999-08-27
EP0942426A3 (de) 2000-05-17
US6504993B1 (en) 2003-01-07
DE69914006D1 (de) 2004-02-12

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